A rectangle has vertices (e, g), (e, f), and (g, f). Find the fourth vertex.

v: l•w•h÷2.

v: 20•6•8 ÷2

v: 960÷2

v: 480

step-by-step explanation:

there is a formula i can give you:

it is r^2*n*sin(360/n) divided by 2 where r represents the "radius" and n is the number of sides.

plug them in:

(10sqrt(3))^2*6*sin(360/6) divided by 2

100*3*6*sin(60) divided by 2

900*sin(60)

900*sqrt(3)/2

450*sqrt(3)

approx is 779.4 cm^2

hm let me think hm think think hm think yes